A service call for a wall-mounted air conditioner located above a laundry room
At AirGreen , we are often called upon to intervene in situations where a wall-mounted air conditioning system is installed in tight spaces, such as a laundry room. This was precisely the case for this client in Sainte-Julie , on the South Shore of Montreal , whose Sharp wall-mounted air conditioner was no longer working properly. The indoor unit, installed above a storage space with a washer and dryer, had a drainage problem and a loss of cooling performance.
Diagnosis: Dust accumulation and condensate drain blockage
Upon arrival, we noticed that the Sharp wall-mounted air conditioner, approximately 12,000 BTU , had not been serviced for several seasons. The air blown was weak, and a slight gurgling noise could be heard inside the unit. After removing the front panel and filters, our technicians quickly identified a significant buildup of dust on the evaporator , combined with a clogged condensate drain .
This type of problem is common in laundry rooms , where moisture and clothing fibers mix with the ambient air, which clogs filters and coils more quickly. As a result, the system loses efficiency, uses more electricity and may even leak due to overflowing of the condensate tray .
Steps of repair
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Complete cleaning of the evaporator and filters
Our technicians disassembled the front panel, removed the filters, and thoroughly cleaned the evaporator fins using a biodegradable degreaser. This immediately improved airflow. -
Unclogging the drain pipe
The clogged drain was purged using a condensate vacuum and then checked to ensure a steady flow. A small amount of stagnant water had begun to generate an unpleasant odor, which was eliminated by thoroughly disinfecting the drain pan. -
Checking the blower motor and temperature sensor
The blower motor was inspected, lubricated, and tested at various speeds. The temperature sensor, which was clogged with dust, was cleaned to ensure accurate readings and prevent premature compressor shutdowns. -
Final performance test and blowing temperature measurement
After restarting, the air outlet temperature quickly dropped from 26°C to 14°C , confirming the system was working properly. The customer immediately noticed a return to optimal comfort .
Results and recommendations
Thanks to this quick and targeted repair , the customer's Sharp wall-mounted air conditioner in Sainte-Julie regained its full cooling capacity. No major part replacement was necessary, which reduced costs.
Our technicians also advised the client to implement annual preventative maintenance , which is particularly important in humid rooms such as laundry rooms. This type of maintenance includes:
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Cleaning the indoor coil and fan ,
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Checking the condensate drain ,
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Checking the refrigerant level ,
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And disinfection of the evaporation tray to prevent mold.
These measures extend the life of the system and ensure healthier air in the home.
AirGreen Expertise: Efficiency, Cleanliness and Precision
This case demonstrates the importance of entrusting your heating, ventilation and air conditioning (HVAC) systems to qualified professionals. Our teams operate throughout the South Shore , in Sainte-Julie , Brossard , Boucherville and Saint-Bruno , for fast and thorough service calls on all brands, including Sharp, Fujitsu, Gree, Midea, Lennox, Bosch and Goodman .
Each AirGreen intervention is distinguished by:
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A precise diagnosis carried out on site,
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Durable repairs ,
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Transparent communication with the customer,
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And rigorous compliance with RBQ and CCQ standards .
Conclusion
The intervention of our technicians in Sainte-Julie made it possible to completely restore the customer's comfort, while avoiding a more costly breakdown. At AirGreen , we believe that a well-maintained system is an investment in peace of mind and energy efficiency.
Need a wall-mounted air conditioner repair on the South Shore?
Contact AirGreen – Heat Pumps, Air Conditioning & Heating , your trusted HVAC partner in Montreal, Laval, Longueuil and Sainte-Julie .